While Cloudera’s Distribution including Apache Hadoop (CDH) operating system support is covered in the documentation, we thought a quick overview of the changes in CDH3 would be helpful to highlight before CDH3 goes stable. CDH3 supports both 32-bit and 64-bit packages for Red Hat Enterprise Linux 5 and CentOS 5. A significant addition in CDH3 Beta 4 was 64-bit support for SUSE Linux Enterprise Server 11 (SLES 11). CDH3 also supports both 32-bit and 64-bit packages for the two most recent Ubuntu releases: Lucid (10.04 LTS) and Maverick (10.10). As of Beta 4, CDH3 no longer contains packages for Debian Lenny, Ubuntu Hardy, Jaunty, or Karmic. Checkout these upgrade instructions if you are using an Ubuntu release past its end of life. If you are using a release for which Cloudera’s Debian or RPM packages are not available, you can always use the tarballs from the CDH download page. If you have any questions, you can reach us on the CDH user list.